Business Reorganization (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2014 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee	50
Restructuring and related costs	$ 6,020
One-time Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	2,182
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	$ 3,838